Test Pilot,
I am a pilot, and some of the guarded switches are used in flight. They are there to prevent activating something when unintended. There are also unguarded levers, that are purposely stiff so they resist being inadvertently moved.
Yes, used "in flight," not in a "dog fight."
You are not using them during an air combat. If there are dozen switches on a pistol sticking out to the side that needs to stay where they are during a gun fight, then I would want guarded switch also, but that is not the case.
As far as some switches being purposely stiff, that is why Glock or M&P has 2.5~3 kg triggers instead of 2kg or less. Also, those switches on an aircraft being stiff does not affect your life since you are not aiming a gun with those switches. It's not like the fire button an a control stick being stiff makes an AIM-120 miss.
Also, guns have had one of the three provisions for loaded carry that I mentioned earlier since a very long time ago. That includes SA hammer down - which is the primary way Browning and the military intended the 1911 to be carried. Take a gander at the Remingont R51 thread with the information posted about the R53.
Hammer down with an SA trigger could be thought of as a variation of Condition 1 - you need to perform a step prior to pulling the trigger. That's true whether it is a muzzle loading single shot, a single action revolver, a Colt 1907 or a P7.
Some of them did, but not all of them had those features for the reasons you mentioned. For example, the reason why DA pull was around 5kg was because of design limitations, not because there was a universal agreement that 5kg is necessary for safety.
Also, if some of the guns you mentioned were in fact designed to be carried with hammer in rest position, then it is a good thing gun designed evolved beyond it. No combat expert or big name trainers, or any government agencies that I am aware of advocates carrying a that way unless it is a DA.
All three methods were put forward to offer a way to carry a gun that didn't involve nothing more than an unblocked single action trigger. The P7 was a monumental effort to fix the problem. And Glock simply declared it a non-problem.
I would agree that there was a time period in history where those methods were promoted as a safety measure, but not the entire history of firearms. I would also agree that period ended around the time Glock became popular/
However, the reason for firearms design moving towards the way of Glock and M&P is not because simply the risk of accidental discharge was ignored. It is because the three methods you mention also comes with their own set of risks while still allowing for accidental discharges, making them not any better than Glocks of M&Ps without those devices in regards to safety.
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